Read Line

The Read Line activity reads lines from a text file. You can use the Read Line activity to read lines from a text file and pass them to another activity using published data.

This activity replaces functionality in the Manage Text File legacy activity from Opalis 6.3.

Configure the Read Line Activity

Use the following information to configure the Read Line activity.

Details Tab

Settings	Configuration Instructions
File	Enter the path and name of the file that you want to read the text from, or select the ellipsis button (...) and browse for it.
File encoding	Select the ellipsis button (...) and select the format that the file is encoded in from the File encoding dropdown list. Verify that you select the correct encoding format. If the file uses a different encoding format, the activity fails.
Line numbers	Enter the line numbers of the text that you want to read from the file that you specified. - To specify a range of lines, use a hyphen: 1-3. This reads lines 1 to 3. - To specify specific lines, use a comma: 5,7,9. This reads lines 5, 7, and 9. - Combine the range and specific lines: 1-3,5,7,9. This reads lines 1 to 3, and lines 5, 7, and 9. - To specify from a specific line to the last line of the file, enter the line number, hyphen, and END: 4-END. This reads lines 4 to the last line of the file. - To specify from a specific line to a line relative to the last line of the file, enter the line number, hyphen, the less-than sign, and the line number relative to the end line: 4-END<3. If the file has 20 lines, this reads lines 4 to 17 from the file. <3 represents the third line from the end. - To specify the last number of lines, enter LASTLINES, colon, and the last number of lines that you want to delete: LASTLINES: 10. This reads the last 10 lines of the file. - Combine different types of operations: 1-5, 8, 10-END<20, LASTLINES: 10. This reads lines 1 to 5, line 8, line 10 to the 20th line from the end, and the last 10 lines. Don't overlap lines or line ranges when combining operations. For example, 5-END, LASTLINES: 10 fails because the 5-END operation already reads to the end, so the LASTLINES: 10 operation can't succeed because the lines are already read, and the activity fails. Important: Don't specify line numbers that don't exist in the file, and don't specify a line number more than once, or the activity will fail.

Published Data

The following table lists the published data items.

Item	Description
File name	The file name of the text file that was read.
File encoding	The file encoding format that you selected in the File encoding field.
Line text	The text of the line that was read.
Line number	The line number of the text that was read. A published data item is created for each line that was read.
Line numbers	The line number range that the user entered in the field.